Insulating pipe-conduit.



W. B. GRAY.

INSULATING PIPE CONDUIT.

APPLICATION FILED AUG.2, I913.

1,159,930, Patented Nov. 9, 1915.

5 22 INVENTOR WZZZZ ATTORIVEKS @7725 Gray an stares ra'rsrrr orrron WILLIAM BEALL GRAY, 0F LOUISVILLE, KENTUCKY, ASSIGNOB TO MARTIN J. BANNON,

OF LOUISVILLE, KENTUCKY.

INSULATING EIPE-CONDUI'I.

Original application filed September 3.0, 2, 1913.

sulating Pipe-Conduits, of whichthe follow ing is a specification.

My invention is an improvement in insulating pipe conduits, and has for its ob ject to provide a conduit of the character specified, having means within the conduit for carrying pipe supports of the character shown in my co-pending applications, Serial No. 720,524t, filed Sept. 16, 1912; Serial No. 709,262, filed July 13, 1912; Serial Nos.,765,281 and 765,282, filed May 3, 1913; and the present application is a divisional application of my co-pending application, Serial No. 723,206, filed Sept. 30, 1912, for a patent on separable earthen insulating pipe conduits.

In the drawings: Figure 1 is aperspective view of one end of a conduit, constructed in accordance with the invention, Fig.2 is a transverse vertical section of the same, Fig. 3 is a similar view of a modified form of conduit, and Figs. 4 and 5 are front views of a portion of one of the supporting ribs, showing modified forms of notches.

In the present embodiment of the invention, the conduit is shown as circular in cross section, but it is obvious that the carrying means could be arranged in conduits of other cross sectional shape with equal facility, and the sections of the conduits may be of any desired length and diameter, in accordance with the conditions to be met.

In the construction of Figs. 1 and 2, each section 1 of the conduit is provided at one end with an outwardly offset annular flange 2, for receiving the adjacent end of the succeeding section or joint. In the body of the conduit, longitudinally extending ribs or ledges 3 are provided, the said ribs or ledges being so arranged that one face of the ribs or ledges is in the same plane while the other face of each rib or ledge is parallel with the adjacent face of the other rib or ledge. At suitable intervals, the ribs or ledges are provided with notches or recesses 1, the said notches being arranged in series of two, and each notch of one rib being in register with a notch of the other rib.

Patented Nov. 9, 1915.

1912, Serial No. 723,286. Divided and this application filed August SeriaI No. 782,661.

It will be noted from an inspection of Fig. 1, that. each of the notches has its bottom rounded from side to side or arcshaped, and the said notches or ribs are designed to receive the ends of the shaft or of the cross bars of the cradles shown in my above-mentioned co-pending applications, Serial No. 720,524L, filed Sept. 16, 1912; Serial No. 709,262, filed July 13, 1912; Serial. Nos. 765,281 and 765,282, filed May 3, 1913; and the shaft or cradle extends across the space between the ribs.

The conduit shown in Figs. 1 and 2 is designed to be separated into upper and lower sections to permit the pipe to be laid in the lower sections, and afterward to permit the upper sections to be placed in position and cemented to the lower section. For this purpose, each section of the conduit is provided with two pairs of oppositely arranged scores or cuts 5 and 6, each score or cut inclining inwardly and downwardly as shown. The said scores or cuts 5 and 6 are of considerable depth, and each decreases in width toward its bottom, and the said pairs are so arranged that when the material of the conduit between the cuts is broken, the conduit will be separated into approximately-half sections. The conduit is provided on its inner surface above each score 5 with a longitudinally extending rounded rib 7, for reinforcing the conduit and especially to reinforce the upper half of the conduit along the separating line to insure the pipe fracturing where intended. The conduit section is also provided with an external longitudinally extendingrib 8 at each of the scores or cuts 6, the said ribs 8 being arranged below the scores or cuts, so that when the conduit is separated into upper and lower sections, the ribs 8 will be with the lower section. The upper face of the rib 8 is horizontal as shown, so that cement may be arranged on the said upper faces and within the scores or cuts 6, after the upper half has been placed, whereby to cement the halves of the conduit sectionstogether.

In the construction of Fig. 3, a circular conduit 9 is shown, and the conduit is provided with ribs 10 of the same shape as the ribs 3, and similarly located in the conduit, and with respect to each other. The ribs are provided with the notches or recesses 11, corresponding in shape and location to the notches 4 and for the same purpose. The ribs or ledges 3 in addition to their function portions, the lowerp0rtions carry the entire weight of the pipe and the supporting mechanism interposed between the pipe and the conduit; After the upper section or portion has been laid and cemented in place, the said upper portion assists in carrying the weight.

In addition, any water that may seep or leak into the conduit may flow away to the junction box well or drain between the ribs, thus escaping without wetting the pipe cover. Thus the said Water will'not interfere with or hinder the function of the pipe.

InFigs. 4. and 5, modified forms of notches are shown, for receiving the extended ends of the cradle. In Fig. at, the supporting rib or ledge 12 has notches 13, each of which is of lesser'width at the upper face of the ribs than at approximately the center of the notch. That is, the side walls of the notch are undercut. The extendedend 1 1 of the cradle which supports the pipe is received within the notch and it will be noted that the said end ltis provided with a groove 19 in one of its sides, the said groove being adapted to receive a portion of the cement or lead filling 16, which is placed in the notch to prevent disengagement of the cradle. In the construction of Fig. 5,'the rib 17 has notches 18, each of which has in one side wall a notch or recess 19. The extended end20 of the cradle is also provided with a notch 21, and the cement or lead filling 22 enters the notches 1 9 and 21, to form a lock for preventing disengagement of the cradle. It will be obvious that many different varieties or arrangements of locking means might be made use of. i

I claim:

.1. A conduit of the character specified, having a pair of longitudinally extending approximately parallel internal integral ribs, the upper faces of the said ribs being in approximately the same plane, each rib having spaced pairs of notches, the notches'of the ribs registering and each notch being laterally extended at one side thereof to form a lock for a sealing material. 7

2. A conduit of the character specified,

Copies of this patent may be obtained for'five cents each, by addressing the Commissioner of Patents,

having a pair of longitudinally extending approximately parallel internal integral ribs, the upper faces of the said ribs being in approximately the same plane, the said ribs having notches in their upper faces, and

each notch having a lateral extension for receiving a sealing material for the purpose specified.

3. A conduit of the character specified having a pair of longitudinally extending approximately parallel internal integral f ribs, the upper faces of the said ribs being in approximately the same plane, the said ribs having notches in their upper faces, each notch belng adapted to receive a sealing material, and having means for prevent ing upward movement of the said sealing material.

1. A conduit of the character specified, havinga pair of longitudinally extending internal ribs, the upper faces of the ribs being in approximately the same plane, and

each of the said upper faces having notches arranged in spaced relation, the notches of one rib registering with the notches of the other rib, and one of the side walls of each notch being recessed.

5. A conduit of -the character specified,

section of the fingers for permitting the insertion of a sealing medium, and means in connection with the notches and the fingers for receiving a portion of the sealing medium to form a lock.

6. A conduit of the character specified, having'a pair of longitudinally extending internal ribs, the upper faces of the ribs being of greater cross section than the cross being in approximately the same plane, and

each of the said upper faces having notches arranged in spaced relation, the notches of one rib registering with the notches of the other rib, one of the side walls of each notch being undercut for the purpose specified;

WILLIAM BEALL GRAY. Witnesses: I

L. A. THOMPSON, CHAs. F. TAYLOR.

Washington, D. C. 

